Luminaire



FIG. 1 is a perspective view of a luminaire showing my new design;

FIG. 2 is a front elevation view thereof. The rear elevation view of the luminaire is identical;

FIG. 3 is a right-side elevation view thereof. The left-side elevation view of the luminaire is identical;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

The ornamental design for a luminaire, as shown and described. 